Which is one function of steroids?
a) waterproofing leaves and feathers
b) insulating and protecting bones and organs
c) serving as chemical messengers
d) providing energy storage

The correct answer is option c) serving as chemical messengers.

The steroids are the compounds, which transfer chemical message from one place to another. The steroids bind to the cells and activate the receptors of the steroid hormones. the steroid hormones are very important for many physiological processes, as well the development of sexual structures.

the answer would be..

b. sucking